Corn-planter.



0. G. RIESKE.

CORN PLANTER.

APPLICATION FILED MAR. 22; me.

Patented Mar. 25, 1919.

r is suitably constructed and o'rro stamens,

0F TORONTO, ONTARIO, CANADA, ASSIGNOR- TO THE MASSEY-HARRIS COMPANY, LIMITED, OF TORONTO, ONTARIO, CANADA.

CORN-PLANTER.

Specification of Letters Patent.

Patented Mar. 25, 1919.

Application filed March 22, 1916 Serial No. 86,022.

To all whom it may concern:

Be it known that I, O'r'ro Gr. RIESKE, of the city of Toronto, in the county of York, Province of Ontario, Canada, a citizen of the United States of America, have invented certain new and useful Improvements in Corn-Planters, of which the following is a specification.

This invention relates to corn planters of the type using rotary seed feeding devices feeding to seed tubes in which are located valves which hold back the seed until tripped by suitable means. The tripping means usually employed comprises a check-rower wire and a check-rower shaft operated thereby which shaft controls the operation of the seed feeding devices as well as the valves, and my Ob10t is to devise a corn planter which will be simple in construction and efiective in operation, in which single acting valves may be employed in the seed tubes, and which is easily adjusted to feed any desired number of grains of corn to a hill.

I attain my objects my means of the constructions hereinafter specifically described and illustrated in the accompanying drawings in which Figure 1 is a plan view partly broken away of part of the corn planter constructed in accordance with my invention;

Fig. 2 is a side elevation of the gearing between the driving shaft and the seeder shaft;

Figs. 3, 4 and 5 are sectional views of the same partly broken away;

Fig. 6 is a side elevation of the gear shifting lever partly broken away; and

Fig. 7 is a plan view of the retaining quadrant therefor.

In the drawings like numerals of reference indicate corresponding parts in the different figures.

Referring more particularly to Fig. 1, 1 is part of the frame work of the planter which arranged to support the difierent parts. 2 is the seeder shaft, 3 the driving shaft therefor, and L the check-rower shaft all suitably journaled on the frame work.

This machine being of the type using a check-rower wire, the check-rower shaft will be provided with means whereby it may be rocked by a check-rower wire, and as such devices are common in the art, they are not herein described nor illustrated.

The driving shaft 3 for the seeder shaft is driven, through the medium of a clutch hereinafter described, by means of bevel gearing 5 from the longitudinal shaft 6, which will be driven from the ground wheels of the apparatus in any suitable manner.

The seeder shaft, by means of the bevel gearing 7, actuates the rotary seed plates 8 of the seeding devices 9, of which only one is illustrated in the drawing. The seed plates are of ordinary construction and each feeds the seed to a seed tube not shown.

In corn planters of this type it is necessary to provide means for intermittently actuating the seeding devices to feed two or more grains to the seed tubes and to hold said grains in the seed tube until the desired number have been collected and the proper position reached for their deposit. I provide the following mechanism for this purpose.

The check-rower shaft is yieldingly maintained in its normal position by means of the coil spring 11, one end of which is connected with the frame and the other with the shaft. This check-rower shaft controls means for putting the driving shaft 3 in gear with the seeder shaft 2, and also controls the deposit of the seed from the seed tubes, as usual.

The driving shaft 3 carries a clutch comprising a member 17 loose on' the shaft and a member 18 fast on the shaft. This clutch will be of an ordinary type normally tending to engage and adapted to be held out of engagement by means of a trip arm, such a clutch, for example, as is shown in United States Patent 687352.

The trip arm 19 for the clutch is located on the check-rower shaft 4:, as is commonly the case. The check-rower shaft thus controls the clutch as Well as the valve.

The seeder shaft 2 carries a spur gear Wheel 20. On the driving shaft 3 a spur pinion 21 is slidable by means of a feather key. This pinion is provided with a plurality of sets of teeth 22, the sets having pitch circles of the same diameter. A different number of teeth is however provided in each set, preferably two teeth in the first set, three in the second and four in the third, as shown particularly in Figs. 1, 2, 3, 4 and 5. The first teeth in each set are in alinement and in form substantially continuous, (see particularly Figs. 1 and 2). This continuous tooth is always in mesh with the spur wheel 20 when the clutch 16 is thrown out of gear, so that the pinion 21 is readily shifted without interfering with its proper meshing with the spur wheel.

As will be noted on reference particularly to. Fig. 5, the teeth of the pinion are. so proportioned relative to the spaces between the teeth of the gear wheel that considerable lost motion is allowed for. From this it follows that the spur gear doesnot commence to move until the pinion has 'made tion, it is necessary to give the teeth of the spur gear and the pinion such a shape that it'is not possiblefor the teeth ofone to jam on'the ends of the teeth of the other. I accomplish :this result by giving the teeth the shape shown in Figs. 2 to 5 of the drawings. Itwill be noted that each tooth of' the spur gear 20 is provided with a concave rearward side which merges into the rounded end of the tooth, which projects somewhat 'rear wardly having reference to the direction of rotation of the gear. The front of each tooth is convexly curved and inclined rear- Wardly.

The teeth of the pinionhave their forward or driving faces of ogee form-as shown to cooperate with the backs of the spurgear teeth, "while the rearwardsides may have any suitable shape or may-be straightas shown. From this shaping of the teeth it resu'ltsthat despite the wide spacingof the teeth of the-spur .gear that each tooth of the pinion will move it -sufiiciently=to-enable the next tooth 0f the pinion to enga e b hind the next tooth of the spur wheel. If

there be any accidental shifting of either the pinion or gear wheel which 'would bring'the rearward sides of the pinion teeth in contact with the backs'or ends of'the spur wheel teeth,-the engagement would besu'b'stantially as indicated in 'Fig. 5 and the spur-gear would be rotated backward a little until the pinion tooth 'had sufficient clearance to enable it to move into the space ahead and engage the next forward tooth as shown in Figs. 2 to 4 of the drawings.

The pinionis shifted by means of a suitable shifter lever. Preferably 'I employ a two part lever as illustrated particularly in Figs. 1, 6 and 7 of the drawings. This lever comprises a part 23 pivoted ona suitable casting secured to the frame of the machine. Thls lever, by means of a pin and slot connection 24, engages ashifter .ring of ordinary type suitably connected 'with thepinion 21. The other-part 26 of :the lever is pivoted on the part 23 and carries a pin operating through a hole in the partrzii and 7 a spur-gear wheel; anda pinion, saidpinion having a plurality ofsets of similar teeth formed thereon on pitch circleso'f the same circumference but having a different number of teeth'in each set, theteethof .any 'set being equally spaced on the pitch circle, and the pinion teeth and spaces between the gear wheel teeth being soproportioned as to give a material amount of lost-"motion; the rear sides=of the gear wheel teeth also being concavely curved and merging into rounded outer ends.

2. Gearing for acorn planter comprising a spurgearwhee'l; and a -pinion,said pinion having a plurality of sets "of similar teeth formed thereon 1 on pitch circles of the=same circumference but "having a d-i'fierent fIIH-Il'lber of teeth ineach set, andthe pinion'teeth and spaces between the gearwheel-teethbeing soproportioned as to give a material amount of lost motion, the rear sides of-the gear wheel teeth also .being'concavely curved and merging into rounded outer ends and the forward edges of the teeth being rear- --wardly inclined.

Signed at city of Toronto-this 23rd day of February, A. D. 1916.

In the presence of the two undersigned witnesses.

- OTTO G. RI'ESK'E. Witnesses: V T. H. DONNER,

JOHN G. HoosAoK.v

Gopies of this patent-may be=obtained tor five cents each,-by addressing .the Commissioner of PaLtents,

:Washington, D. 0. 

